Greetings. I have an 2009 tacoma and am trying to figure out if it has satellite radio installed - just not activated. I would say no it doesn't but when I installed my iPod adapter, there was already a plug in the back of the radio where the Satellite plug goes. That and it has an Satellite radio antenna.

follow the cable on the antenna, and see where you end up maybe? I'm guessing the cable end is behind the glovebox or under the steering wheel and the prev owner was too lazy to take it out when he took his sirius out.